The mail-slot hold that is about 3 feet straight up the face from the first bolt seen on this photo (which is the second bolt) contained a sleeping bat. It's right where the face meets the roof. I just happened to put my hand right next to the bat, not onto it, thus avoiding a bite, I guess. Kinda strange, it was lying down wedged in there, face out, staring at me. Guess they don't always sleep hanging upside down. FYI.